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7.2 WITH HYDRAULIC DRIVE TURBINE
MACHI-
NE TYPE
HYDRAULIC ENGINE
Absorption capacity (cm³)
Speed (rpm)
600 and 700
8
4500
MA-
CHINE
TYPE
OIL SUPPLY
Minimum
outlet pressure
(bar)
Maximum return
pressure (bar)
Oil flow (L/min)
600 and 700
160
1,5
40
CONNECTION
Connect the small hose quick coupling of the turbine to a
tractor pressure outlet. Connect the small hose of 1/2" with
the large quick coupling to a return without pressure.
MAXIMUM RETURN PRESSURE IS 1.5 BAR. EX-
CEEDING THIS PRESSURE MAY RESULT IN EN-
GINE DAMAGE.
Fig. 7.2
ADJUSTMENT
Turbine rotation speed is controlled by adjusting the tractor
hydraulic outlet.
To guaranty the seed supply to the sowing shoes, it is indis-
pensable that the turbine rotates between 4200 and 4500
rpm according to the previous chart. At lower speed, it is
possible that some seeds remain inside the hoses, clogging
them.
IF OIL GETS TOO HOT BECAUSE THE FLOW
PUMPED BY THE TRACTOR IS EXCESSIVE OR
THE OIL RESERVOIR IS TOO SMALL, AN ADDI-
TIONAL OIL RESERVOIR IS NECESSARY.
IF THE TRACTOR HYDRAULIC PUMP FLOW IS
NOT SUFFICIENT FOR FEEDING THE TURBINE
ENGINE OR FOR STARTING ANOTHER NECES-
SARY ELEMENT, PLACING AN AUXILIARY EQUI-
PMENT WITH AN ADDITIONAL PUMP ACTIVA-
TED BY THE PTO AND A REFRIGERATED OIL
DEPOSIT WILL NECESSARY. CONSULT THE MA-
NUFACTURER REGARDING THE SEED DRILLER
OPERATION.